Rubber sole for sandals



July 25, 1939. l M, wEsTHElMER 2,167,035

RUBBER SOLE FOR SANDALS.

Filed oct. 22. 1938 2 sheets-sheet 1 I ATTORNEY.

Jly 25, 1939. M. A, WESTHEMER Y 2,161,035

'RUBBER SOLE FOR SANDALS ATTORNEY.

Patented July 25, 1939 Application -October "22; 1938, Serial No.236,371

(Cl. SG1-11.5)

2 Claims.

The invention relates to a sandal having a rubber sole and particularlyto` an arch supporting sandal.

Many devices for the support of the instep arch 5 are known and usedwith shoes or boots.

In the majority of these cases the arch-supporting means consist ofsuitably shaped metal plates or pads and cushions of Aresilient materialand many suggestions and attempts have been made to properly vconnectthese arch supports I of Fig. 4,

with' the soles of the shoes, one of the most important requirements inthis connection being that the dislocation and the displacement of thearch support is prevented and lits x'edposition .5 is ensured,

This problem of suitably and `properly locating the arch support howeverbears a fully different aspect ifthe support is to be used in a sandal.

A sandal by its very nature is not a tight fitting l0 article offootwear and is loosely connected with A the foot by means of straps.Consequently due to the loose fit a separate arch support of theordinary type can not be held in place.

It is the object of the invention to provide for z the proper wearingrelationship between thefoot,

the arch support yand the sole. 1

. With this purpose in view the rubber sole is shaped and manufactured.according to this invention integral with the arch `support. e04 It isafurther object-of the invention to pro-l vide improved means foraccommodating and fastening the tying straps. This is accomplished byproviding peculiar recesses premolded in the.

sole. x

36 7 It is a further objectl of the invention to provide a soleintegrally molded in conformity with l the shape of the foot. 4

It is a further object to improve the fastening of the. straps to thesole so that the same will noticeable to the wearer.

All these improvements of the rubber-l forming the subject of theinvention are effected during the manufacture or vulcanization thereofand the rubber sole therefore is a ready made,

' arch supporting unit for. mounting on' the same the furtheraccessories o f the sandal. f

The invention is illustrated by way of example in the annexed drawings,ofwhich f Fig. 1 shows a top view of the sandal,

Fig. 2 shows a side view of the same,

Fig', 3 a sectional view according to of Fig. 1,` I'

l Fig. 4 a top view ofthe rubber sole,

Fig. 5 a side view of the same,

nnstoa merge into the sole with no undue protrusions Fig, 6 a, sectionalview according to line 6-6 Fig. '7 a sectional view according to line1--1 of Fig. 4, V

Fig. 8A a sectional view according` to line 8' 5- .of Fig. 1.

The sole I made of rubber has an outwardly curved ielevation 2 on itsinside surface 3 which in the location of the instep arch ascends fromthe middle part ofv the sole and extends to the l0 inner side of the`same the outside curvature of this elevation 2 corresponding to theinstep arch.

A series of recesses 4 are formed in the inner surface of the sole;thesel recesses exactly correspond to the'shape of the end portion ofthe tyl5 ing 'straps 5 which in order to be connected to the sole areinserted into ,these recesses. A

'I'he dimensions andthe depth of the, recesses which maybe arranged atsuitable places are chosen in such manner that when the straps areinserted they lie flush with the upperA surface of the rubber solel Thetoe part 6 ofthe sole is preferentially upwardly bent and a concavecurvature I corresponding totheshapepf the heel part of the foot isprovided in the inside surface of the sole.

The straps are fastened to the sole by means of hollow rivets 9; forthis purpose holes Ill and perforated washers II are provided inthe soleduring the manufacture and vulcanisation there- '30 of. The end portionsof the straps are inserted into the recesses and the rivets are driventhrough the same,' the holes of the sole and the washers; the ends ofthe rivets protruding within the sole over the Vwashers are flattenedout over the out- 3'5l side of the same by a suitable pressingy tool.

Instead of using rivets the straps may also be sewed to the soles; theseams are preferentially located inside of the soles so that they arenot visible from the outside.

After fasteningv the straps in' the described or any other suitable.manner the sole is covered by a leathenblank I4' of which'the shapecorrespondsfft the shape of the sole. 'An'elevated oughened marginalportion 8-is provided Von-the 45 f' inside surface of the sole. Thedepth of the strap receivingv recesses is such that the straps are ushwith'the inner surface of the sole; if coveredvby the leatherblank auniform continuous walking surface is created therefore and the strapswill not create undue pressure on the foot of the wearer.

The heel I3 which also' is an integral part of the sole extends with itsinner front edgeI I2 up to the arch supporting elevation 2.

The outside or the walking surface of the sole may be roughened in orderto form an imitation of the crude or the so-called crpe rubber, 'or athin sheet of this rubber may be cemented vto the walking surface of thesole.

With the integral arch supporting elevation, the integral heel, therecesses in the sole for the tying straps and the fastening means insideof the sole of the latter forms a ready-made archsupporting mountingunit.

What I claim is:

1. A rubber outsole for sandals comprising a heel and an arch supportintegral with said sole, recesses in the upper face of said sole foraccommodating the ends of fastening straps, said recesses being of sucha depth as to accommodate said straps in flush relationship with'the topsurface of said sole, holes for receiving hollow rivets passingvertically through said sole and into the said recesses, said rivetsbeing adapted to be attened out over the ends of the straps to bereceived in the recesses, an elevated marginal portion on said. sole, ablank vcovering .the inside surface of the sole and having its top faceflush with the top' face of saidmarginal portion, said marginal portionextending continuously around the sole, said sole thereby formingaready-made mounting unit for the fastening straps and insuring theproper location of'the arch support in relation to the heel and to thestraps.

2. A sandal comprising a rubber sole having an arch support integraltherewith, recesses in its upper yface adapted to receive the ends offastening straps with substantially the entire ends of -said straps inflush relationship to the upper face of said sole, said sole having anarrow, continuous" margin around its upper face elevated above the bodyof said rubber sole, foot engaging straps having their ends secured inthe recesses, and a leather central element disposed in the recessformed by said margin, the top face of said centrai element being flushwith the top of the margin.

MAX ALBERT WES'I'HIEMR.

